Access Gate Foot Detection for Privacy-Conscious Tailgating Control
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Solution Overview
Problem
Current solutions for detecting tailgating at access gates are inaccurate, complex, and raise privacy concerns by capturing personal data, and often result in false alerts due to objects being mistaken for unauthorized individuals.
Innovation Solution
An access gate system that uses detectors focused on capturing measurement data from individuals' lower body extremities, particularly their feet, to detect tailgating without capturing personal data, utilizing optical sensors or cameras with directed fields of view and an electronic circuit to analyze foot information and control the barrier based on predefined criteria.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If 3D imaging techniques are used to detect tailgating, then detection capability is improved, but device complexity and privacy issues worsen
Solution Approach 1:
The patent extracts only the essential information needed for tailgating detection - specifically the presence and position of individuals - while discarding all other personal data. By using detectors configured to capture only specific parameters (such as distance, presence, and basic movement patterns) rather than comprehensive 3D images, the system achieves reliable tailgating detection without the complexity and privacy issues of full 3D imaging systems.
2Measurement precision
If comprehensive visual data is captured to detect tailgating, then detection accuracy is improved, but privacy concerns and false alerts worsen
Solution Approach 1:
The patent applies local quality by configuring detectors to capture only specific local information - namely data related to lower body extremities and feet - rather than comprehensive visual data. This localized data capture approach maintains sufficient detection accuracy for identifying tailgating behavior while minimizing privacy invasion and reducing false alerts caused by capturing irrelevant personal information.
Solution Approach 2:
The system extracts only the minimal necessary data - presence, position, and movement patterns of individuals - while deliberately excluding personal identifiable information. This extraction principle enables accurate tailgating detection without capturing comprehensive visual data that would lead to privacy concerns and false alerts.
3Loss of information
If detectors capture comprehensive data of passing individuals, then object identification is improved, but false alerts increase due to objects being mistaken for individuals
Solution Approach 1:
The patent uses local quality by directing detectors to capture specific local characteristics - particularly features of lower body extremities and feet - that are sufficient for identifying individuals in a tailgating context. This selective data capture provides enough information to distinguish people from objects while minimizing false alerts, as objects lacking human foot characteristics can be reliably excluded.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Effectively detects tailgating without capturing personal data, reduces false alerts, and enhances security by accurately distinguishing between individuals and objects, thereby improving access control.
Implementation Method 1
an optical sensor having an optical axis directed to the ground of the passageway, such as to limit capturing of visual data
Data Source
AI summary
An access gate for controlling access of individuals passing through a passageway to an access controlled area comprises a cabinet, bordering the passageway, and a movable barrier, attached to the cabinet and configured to open or close access through the passageway. The access gate further comprises a detector having a detection zone directed to a ground of the passageway. Capturing measurement data of individuals approaching the movable barrier is thereby limited to lower body extremities, including feet of the individuals approaching the movable barrier. An electronic circuit is connected to the detector and configured to determine from the measurement data received from the detector information related to the feet of the individuals approaching the movable barrier, and to detect tailgating of the individuals passing through the passageway, using the feet information.